Feed roller for sawing, planing, and like machines



May 24, 1927. 1,629,642

T. SHURMER FEED ROLLER FOR SAWING, FLANING, AND LIKE MACHINES Filed May 26 1925 Patented May 24, 1927.

THOMAS SHURMER, 0F STOCKTORT, ENGLAND.

FEED ROLLER FORSAWING, PLANING, AND LIKE MACHINES.

Application filed May 26, 1925, Serial No. 33,067, and in Great Britain ianuary 1, 1925.

Hitherto feed rollers have been formed of cast iron on the circumference of which teeth have been formed by milling, the face of the teeth being substantially radial and the back of the teeth being inclined to form part of a chord. Such feed rollers involve considerable work in manufacture and the teeth are not generally deep enough and soon become clogged. Also, being made of cast iron they soon lose their sharpness and require to be re-cut and after a few times become too small for further use.

The object of this invention is to provide an improved feed roller which will overcome these disadvantages.

According to the invention the roller comprises a core in which are mounted detachable blades, means being provided to secure the blades within the core. 7

The accompanying drawing illustrates one form of the invention, in which Fig. l is an elevation, a part ofone of the end plates being removed to show the teeth in their grooves.

Fig. 2 is an elevation. V

Fig. 3 is a sectional plan, showing the method of assembly of the parts.

Fig. 4c is a perspective detail view of one of the teeth.

In the form shown, representing a 5 inch feed roller, the core a is provided with the usual hole 7) for fitting on to the driving spindle. The core is formed with 16 longitudinal grooves c in which are arranged blades (1 constituting the teeth of the roller, the greater part of the ends of the blades lying nearly flush with the ends of the core but just longer than the core so as to be engaged and gripped by end plates 6 and f. The inner portions 9 of the ends of each blade are however inclined so as to stand up above the ends of the core. The end plates 6 and f are formed with bevelled'ahnular grooves h, and are secured by screws j to the core, the deeper portion of the groove it being nearest to the centre. The blades (Z are thus secured from radial displacement by their inclined ends 9 lying in the grooves h in the end plates 0 and f.

Inuse, one end plate 6 is first secured to the core, a set of blades cl are then inserted in the slots (see Fig. 3) and the other end plate f placed in position and screwed down tightly to the core. 'VVhen the blades area worn they may be'easily removed by taking off or easing off oneend plate and new blades substituted; the worn teeth may then be resharpened when convenient.

The operative edges of the blades will preferably be bevelled at Z: to increase the grip in'the driving directionand owing to the distance of that edge from the core, there is practically no possibility of the teeth be coming clogged. The blades may be made of any suitable steel that may be hardened,

to reduce the rate of wear in use.

The blades may be formed with notches and the end plates formed with a correother suitable means may be provided is taining'the blade in the core and the operating edge of the blade may be made any nature of this invention. What I claim is 7o sponding annular ridge to engage them or.

A feed roller for sawing,'planing and like i machines comprising a cylindrical core having a central shaft receiving bore and provided at each end with a central boss, said core being provided in its outer'portion with annular series of longitudinal slots extending to the periphery ofthe core, said core having a relatively large solid portion between the walls of the slots and the shaft receiving bore, detachable plates of approximately oblong form and mounted in the said slots and having the major portion of their side edges in flush relation with the end faces of the bore, said plates being provided at the inner portions of their ends with projecting wedge-shaped corner formations, the outer portions of the plates projecting from the core and constituting feeding teeth, an-- nular detachable end plates fitted on the said bosses and of uniform diameter with the core and provided at'their inner faces with annular grooves conforming to the configuration of and receiving the wedge-shaped formations of the plates, and fastening means piercing the annular plates and securing the latter to the coreat a point between the slots and the bosses. r

In testimony whereof I have signed my name to this specification.

I THOMAS SHURMERQ 

